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Product Description
Elevate your garden with the Purple Black Supreme Rose Flower Seeds, a striking heirloom variety celebrated for its deep, dramatic purple-black blooms and compact growth habit. Perfect for borders, patios, or container gardens, this low-maintenance flower adds elegance and intensity to any landscape. GMO free and easy to grow, these seeds are ideal for gardeners seeking unique, heirloom-quality roses.
Plant Type: Ornamental flowering plant
Flower Color: Deep purple to black
Growth Habit: Compact and bushy; perfect for borders, containers, and small garden spaces
Blooming Season: Spring through summer
Seed Type: Heirloom, GMO free
Uses: Ideal for garden displays, patios, borders, and cut flowers
Hardiness: Thrives in full sun to partial shade; suitable for temperate climates
Soil Preparation: Use well-draining, fertile soil enriched with organic matter.
Sowing Method: Sow seeds indoors 6–8 weeks before the last frost, or outdoors once soil temperatures are warm.
Planting Depth: Lightly cover seeds with 1/16–1/8 inch (1–3 mm) of soil.
Spacing: Maintain 8–12 inches (20–30 cm) between seedlings for optimal growth.
Light Requirements: Full sun to partial shade for vibrant blooms.
Watering: Keep soil lightly moist during germination; moderate watering once established.
Germination Time: Typically 14–21 days depending on conditions.

Life Cycle
Annual
Planting Season
Spring–Early Summer
Growth Habit
Mounding Spreading
Flavor Profile
Not
Plant Characteristics
Deep Black Blooms
Use
Borders, Containers
Growing Conditions
Full Sun, Loamy Soil
Harvest Advantages
Continuous Bloom
Plant Resistance
Heat Tolerant
Seed Names
Black Velvet Petunia
Seed Type
Hybrid Open-Pollinated
Light Requirement
Full Sun
Planting Depth
Surface Sow
Sowing Method
Indoor or Direct
Plant Spacing
10–12 Inches
Days to Maturity
80–90 Days
Soil Preparation
No Soaking Needed
Hardiness Zones
9–11
Water Needs
Moderate
Planting Season
Spring
Seed Count
Recommended Coverage
100
Up to 50 sq ft
500
Up to 250 sq ft
1000
Up to 500 sq ft